Christian Seybold ( 1697 - 1768 ) was a German painter. Christian Seybold s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 8370.3 USD for Self-Portrait as an aged man in 2005 to 69000 USD for A PORTRAIT OF A ELDERLY LADY in 2006 , based on the size and medium of the artwork.